Nothing wrong with sand castings. After all, it's what was used on all of these old guns.
Back when I started,sand castings were all that were available and most of those
came from Ken Roethlesberger in Ohio. Theodore (Ted) Cole was probably the
first to offer investment cast steel parts in locks but the quality was lacking.
After that,Chester Shoults made a lock that was decent quality from all cast
parts.The molds for these were a masterpiece of milled and polished aluminum
cavities and these parts are still available from Jerry Devaudreuil in Wooster Ohio.
For several years I have used the external parts for 3 L&R locks,The Manton,Ashmore and Egg
and NO problems with quality. I do make my own mechanisms and have for over 50 years
no matter what externals I used. I have no idea as to how many Shoults and Maslin locks
I have made plus a Twigg (Not the Davis Twigg).Also have used the Chambers Late Ketland
externals with a linked mechanism.Another Ketland was also made by me and I don't know
about the parts now.
My opinion,for what it's worth tells me that muzzle loading guns after the revival in 1933
and the advent of the NMLRA were never oriented to quality parts and IF someone offered
them and asked to be paid what they were worth that meant GOODBYE. I would like to
know how many FINE craftsmen turned away from the muzzle loading sport because of this.
I got into making parts and pieces for old cars and forgot about the guns until I "retired"
in 1998. The Germans were the ones that got me back I to it because their attitude was
NOT like our guys.I don't make many locks or triggers now and if I do I WILL be paid for
the 109 foot walk to the shop to make them.
Bob Roller